JP2022029607A - Method of manufacturing wall panel - Google Patents

Abstract

To realize a method of manufacturing a wall panel that can extremely improve the accuracy of external dimensions.SOLUTION: A method of manufacturing a wall panel 30 according to the present invention comprises: a B1 step of preparing a plate 10 to which a sheet 39 is bonded and forming a reference line 34c; a B2 step of moving and positioning a base part 152 supporting a normal-use abutment part 148A and selective abutment parts 148B-F; a C1 step of abutting the reference line 34c against the normal-use abutment part 148A and the selective abutment parts 148B-F and bending it, for the plate 10 up to an N-th one; a C2 step of performing shape measurement on the bent plate 10 and if a deviation amount exceeds an allowable range, making a fine adjustment by individually moving one or both of the normal-use abutment part 148A and the selective abutment parts 148B-F relatively to the base part 152; and a D1 step of abutting the reference line 34c against the normal-use abutment part 148A and the selective abutment parts 148B-F and bending it, for the N+1-th plate 10 and the subsequent.SELECTED DRAWING: Figure 14

Description

The present invention relates to a method for manufacturing a wall panel, and more particularly to a method for manufacturing a wall panel constituting a wall portion of a unit bath.

Regarding the wall panel constituting the wall portion of the unit bath, techniques relating to its structure and manufacturing method are disclosed in Patent Document 1 (Japanese Patent Laid-Open No. 2003-0333837), Patent Document 2 (Japanese Patent Laid-Open No. 2004-150253) and the like. ing.

Japanese Patent Application Laid-Open No. 2003-0333837 Japanese Unexamined Patent Publication No. 2004-150253

The wall panels exemplified above are arranged side by side with a gap of a predetermined dimension in the wall portion of the unit bath in an arrangement in which the long sides thereof are adjacent to each other, and are stopped by inserting a joint material into the gap. It is used in a state where it causes water action. If a curable liquid resin material is used as the joint material, even if the shape and dimensions of the gap vary due to the low accuracy of forming the external dimensions of the wall panel, the gap will be filled. It can be buried to prevent water from entering the wall (the back side opposite to the indoor side). However, the joint material made of a liquid resin material takes time and effort to construct, which causes a problem that the construction period and cost increase.

Therefore, the wall panels described in Patent Documents 1 and 2 are configured to use a solid dry joint material formed by using a resin material, thereby facilitating the construction work, shortening the construction period, and reducing the cost. It is an attempt to achieve. On the other hand, because the dry joint material is used, if the formation accuracy of the external dimensions of the wall panel (particularly, the parallelism of the long side) is even slightly low, the water stoppage of the gap into which the joint material is inserted is stopped. It cannot be done completely, and there is a problem that water infiltrates into the wall.

Here, the above-mentioned wall panel is manufactured by forming a rectangular metal plate material into a predetermined shape by press working. Therefore, if a rectangular plate material in which the error (angle tolerance) at the time of formation (during cutting) at the squareness of the four corners is set as small as possible is used as the raw material, the formation accuracy of the external dimensions of the wall panel formed by press working can be improved. It can also be increased. However, in order to prepare such raw materials, expensive equipment with high processing accuracy is required, and work such as measuring the processed materials to drive errors is also required, resulting in raw materials. There is a problem that the cost of plate materials rises.

The present invention has been made in view of the above circumstances, and is in a state where the unit bath is juxtaposed with a gap of a predetermined size and a solid dry joint material is fitted in the gap to cause a water blocking action. As for the wall panel used in the above, an inexpensive rectangular plate material having a relatively large angle tolerance at the time of formation (during cutting) at the squareness of the four corners can be used as a raw material, and it is formed by pressing. By realizing a manufacturing method that can extremely increase the formation accuracy of the external dimensions (particularly, the parallelism of the long side), the water stopping performance in the gap where the dry joint material is fitted is dramatically improved. The purpose is to shorten the construction period and reduce costs by facilitating construction work.

As an embodiment, the problem is solved by a solution means as disclosed below.

The disclosed wall panel manufacturing method is formed by a processing step of processing a plate material made of a metal material having a sheet made of a resin material attached to one surface to a predetermined shape while transporting the line, and the wall portion of the unit bath. This is a method for manufacturing a wall panel, which is used in a state where a solid dry joint material is fitted into the gap and is used in a state where a water blocking action is generated while being juxtaposed with a gap of a predetermined size. The steps are an A1 step for preparing the rectangular plate material, and a reference position for bending the plate material at a predetermined position along the long side at a predetermined position after the A1 step. Depending on the length of the long side of the plate material, the B1 step for forming the line, the regular abutting portion provided at one place and used regularly as the abutting portion for abutting the reference line, and the abutting portion provided at a plurality of places. By moving the base portion that independently and movably supports the selective abutment portion that is selected and used at one location according to the length of the set short side, the regular abutment portion and the regular abutment portion and For the B2 step in which both of the selective abutting portions are moved at once to position the set position, and the plate material up to the N (N = natural number) sheet after the B1 step and the B2 step. Then, the reference line is abutted against the regular abutting portion and the selective abutting portion, and the plate material is bent by pressing at a position parallel to the reference line and separated by a predetermined dimension. After measuring the shape of the C1 step to be performed and the shape of the plate material bent in the C1 step, and then comparing with the design value, when the amount of deviation obtained exceeds the permissible range, the base portion. On the other hand, by individually moving one or both of the regular abutting portion and the selective abutting portion in the front-rear direction in the line transport direction, the set positions of the regular abutting portion and the selective abutting portion can be determined. After the C2 step for fine adjustment, the C1 step, and the C2 step, the reference line is applied to the N + 1th and subsequent plates at two locations, the regular abutting portion and the selective abutting portion. It is characterized by comprising a D1 step of bending the plate material by press processing at a position parallel to the reference line and separated by a predetermined dimension.

According to the present invention, a wall panel is manufactured which is used in a state where it is juxtaposed on the wall portion of a unit bath with a gap of a predetermined size and a joint material is fitted in the gap to cause a water blocking action. Regarding the method, an inexpensive rectangular plate material in which the angle tolerances at the squareness of the four corners are set to be relatively large can be used as a raw material, and the formation accuracy of the external dimensions (particularly, the parallelism of the long side portion) is extremely high. It becomes possible to manufacture wall panels. As a result, in a configuration in which a solid dry joint material is used as the joint material instead of a liquid resin, it is possible to dramatically improve the water blocking performance of the gap into which the joint material is fitted. Therefore, when constructing the wall portion, the construction work can be facilitated, the construction period can be shortened, and the cost can be reduced.

It is a schematic diagram (front side perspective view) which shows the example of the wall panel which concerns on embodiment of this invention. It is a schematic diagram (back side perspective view) which shows the example of the wall panel which concerns on embodiment of this invention. FIG. 3 is a sectional view taken along line III-III in FIG. FIG. 6 is a sectional view taken along line IV-IV in FIG. It is a schematic (plan view) of the corner joiner which connects the wall panels which concerns on this embodiment. It is a schematic (plan view) of the flat joiner which connects the wall panels which concerns on this embodiment. It is the schematic (perspective view) of the dry joint material which fits into the gap where the wall panel which concerns on this embodiment is arranged side by side. It is explanatory drawing explaining the method of constructing the wall part of a unit bath using the wall panel which concerns on this embodiment. It is explanatory drawing explaining the method of constructing the wall part of a unit bath using the wall panel which concerns on this embodiment. It is explanatory drawing explaining the method of constructing the wall part of a unit bath using the wall panel which concerns on this embodiment. It is a schematic diagram (schematic configuration diagram in a plan view) which shows the example of the manufacturing apparatus which manufactures the wall panel which concerns on this embodiment. It is a schematic diagram (plan view which emphasized shape) of the raw material used for manufacturing the wall panel which concerns on this embodiment. FIG. 11 is a schematic diagram (schematic configuration diagram in a plan view) showing an example of a long side processed portion of the manufacturing apparatus shown in FIG. FIG. 11 is a schematic diagram (schematic configuration diagram in a plan view) showing an example of a long side processed portion of the manufacturing apparatus shown in FIG. It is explanatory drawing (plan view which emphasized shape) for demonstrating the problem which the manufacturing method of the wall panel which concerns on this embodiment tries to solve. It is explanatory drawing (plan view which emphasized shape) for demonstrating the problem which the manufacturing method of the wall panel which concerns on this embodiment tries to solve. It is explanatory drawing (cross-sectional view which emphasized shape) for demonstrating the problem which the manufacturing method of the wall panel which concerns on this embodiment tries to solve.

The wall panel manufactured by the manufacturing method according to the present embodiment is formed by a processing step of processing a plate material made of a metal material having a sheet made of a resin material attached to one surface to a predetermined shape while transporting the plate material in a line. , It is used in a state where it is juxtaposed on the wall of the unit bath with a gap of a predetermined size and a solid dry joint material is fitted into the gap to cause a water blocking action. Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In all the drawings for explaining the embodiment, the members having the same function may be designated by the same reference numerals, and the repeated description thereof may be omitted.

(Wall panel)
First, a configuration example of the wall panel 30 according to the present embodiment will be described. FIG. 1 is a perspective view of the front surface side (indoor side of the unit bath) of the wall panel 30, and FIG. 2 is a perspective view of the back surface side (outdoor side of the unit bath) of the wall panel 30. Further, FIG. 3 is a sectional view taken along line III-III in FIG. 1, and FIG. 4 is a sectional view taken along line IV-IV in FIG. As an example, the wall panel 30 is formed to have a long side dimension of about 1000 mm to 2300 mm and a short side dimension of about 300 mm to 1200 mm, but is not limited thereto. Further, each drawing such as FIG. 1 is not displayed at a strict scale with respect to the actual size.

As an example, the material for manufacturing the wall panel 30 is a rectangular (substantially rectangular) plate material (details will be described later) made of a metal material (for example, zinc-plated steel having a thickness of about 0.5 mm). A steel plate (so-called "decorative steel plate") 10 to which a sheet (so-called "decorative sheet") 39 made of a resin material (for example, polyester resin having a thickness of about 0.1 mm) 39 is attached to a surface is used (hereinafter, simply referred to as "decorative steel plate"). Sometimes referred to as "raw material"). By changing the design of the sheet 39, the wall surface design of the unit bath can be changed, and a wide variety of variations can be provided (that is, the surface to which the sheet 39 is attached becomes the surface of the wall panel 30). Details will be described later, but by using this raw material 10 to process the four corners into a predetermined shape by press working (cutting) and then processing the four sides into a predetermined shape by pressing (bending), the wall surface component is flat. A wall panel 30 having a rectangular shape is manufactured. The composition of the raw material 10 is not limited to the above example.

As a configuration example of the wall panel 30, the raw material 10 is bent 90 ° toward the back surface side and then 90 ° toward the back surface side at a position near the first short side 15 to form a U-shaped cross section as shown in FIG. It has a bent portion 31 in the shape (more accurately, the U-shape of Japanese katakana). Further, the position near the second short side 16 of the raw material 10 is bent 90 ° toward the front surface side and then 90 ° toward the back surface side, so that the bent portion having an L-shaped cross section as shown in FIG. It has 32. On the other hand, the raw material 10 is bent at a position closer to the first long side 17 and a position closer to the second long side 18 at 90 ° on the back surface side, then 120 ° on the back surface side, and then 90 ° on the back surface side, respectively. As a result, as shown in FIG. 4, the bent portions 33 and 34 having a triangular cross section are provided. However, the configuration is not limited to this.

(Joiner)
Subsequently, a configuration example of the joiners 40 and 50 for connecting the wall panels 30 according to the present embodiment will be described. FIG. 5 is a plan view of the corner joiner 40 arranged at the corner portion (corner portion) of the unit bath, and FIG. 6 is a plan view of the flat joiner 50 arranged at the side portion (intermediate portion) of the unit bath. It is a figure.

The corner joiner 40 is formed by processing a rectangular plate material made of a metal material (for example, galvanized steel or the like) into a predetermined shape by bending. As shown in FIG. 5, at the end portion (that is, the long side portion) of the plate material in the lateral direction, the bent portions 41 and 42 having a triangular cross section formed by being bent are provided, respectively. The bent portions 41 and 42 have an opening 44 between them, and a hollow portion 46 inside.

Further, the flat joiner 50 is formed by processing a rectangular plate material made of a metal material (for example, galvanized steel or the like) into a predetermined shape by bending. As shown in FIG. 6, at the end portion (that is, the long side portion) of the plate material in the lateral direction, the bent portions 51 and 52 having a triangular cross section formed by being bent are provided, respectively. An opening 54 is formed between the bent portions 51 and 52, and a hollow portion 56 is formed inside.

(how to use)
Subsequently, a method of forming the wall portion of the unit bath by using the wall panel 30 according to the present embodiment will be described. As a rule, the wall panel 30 is arranged so as to go around the outer peripheral edge of the floor portion 62 (for example, a shallow box-shaped floor pan) 62 together with the corner joiner 40 and the flat joiner 50 which are connecting parts. To form the wall of the unit bath. The block members 66 to 69 made of a resin material are fitted to the upper end and the lower end of the corner joiner 40 and the flat joiner 50. Hereinafter, it will be described in detail.

First, as shown in FIG. 8, one wall panel 30 (30A) is erected on the outer edge of the floor 62 at a position (adjacent position) near one corner of the floor 62 formed in a rectangular shape. do. At this time, the folded curved surface 31b (first folded curved surface) of the bent portion 31 of the wall panel 30 (30A) and the under-wall packing 64 provided on the contact surface 62a of the outer edge portion of the floor portion 62 come into contact with each other (the first folded curved surface). The structure is close to each other to prevent the ingress of water. As an example of the under-wall packing 64, a known waterproof tape made of a resin material or the like is used.

Next, the corner joiner 40 is erected at a predetermined position of the floor portion 62 (corner portion position adjacent to the wall panel 30 (30A)). Specifically, after the corner joiner 40 is attached to the wall panel 30 (30A), the lower end portion of the corner joiner 40 is fitted into the block member 67 arranged on the floor portion 62 to fit the corner joiner 40 and the wall panel. The 30 is erected while being positioned at a predetermined position.

When attaching the corner joiner 40 to the wall panel 30 (30A), the bent portion 33 of the wall panel 30 (30A) is inserted into the hollow portion 46 from the opening 44 of the corner joiner 40 into the bent portion 42. It is in a locked state. At this time, the bent curved surface 33a (second locking surface) of the bent portion 33 and the bent curved surface 42a (second support surface) of the bent portion 42 are in contact with each other.

Next, one wall panel 30 (30B) is erected on the outer edge of the floor portion 62. At that time, the bent portion 34 of the wall panel 30 (30B) is inserted into the hollow portion 46 from the opening 44 of the corner joiner 40 and locked to the bent portion 41. At this time, the bent curved surface 34a (first locking surface) of the bent portion 34 and the bent curved surface 41a (first support surface) of the bent portion 41 are in contact with each other. As in the case of the wall panel 30 (30A), it is provided on the folded curved surface 31b (first folded curved surface) of the bent portion 31 of the wall panel 30 (30B) and the contact surface 62a of the outer edge portion of the floor portion 62. The structure is such that the packing 64 under the wall is in contact (closely) with the packing 64 to prevent water from entering.

Next, as shown in FIG. 9, the block member 66 is attached to the upper end portion of the corner joiner 40. The block member 66 has a bent portion 33 (specifically, a hollow portion 33d) of the wall panel 30 (30A) and a bent portion 34 (specifically, a hollow portion 34d) of the wall panel 30 (30B). Each of them is provided with a protruding insertion portion (not shown). By inserting this insertion portion into the bent portion 33 (hollow portion 33d) and the bent portion 34 (hollow portion 34d), it is possible to prevent the block member 66 from coming off, and the wall panel 30 (30A) can be folded. The curved surface 33a (second locking surface) is in contact with the folded curved surface 42a (second supporting surface) of the bent portion 42 of the corner joiner 40, and the curved surface 34a (first) of the wall panel 30 (30B). The locking surface) can be reliably fixed in a state of being in contact with the folded curved surface 41a (first support surface) of the bent portion 41 of the corner joiner 40. However, the configuration of the block member 66 is not limited to the above example.

Next, the flat joiner 50 is erected at a predetermined position of the floor portion 62 (an intermediate position adjacent to the wall panel 30B). Specifically, after the flat joiner 50 is attached to the wall panel 30B, the flat joiner 50 and the wall panel 30 are designated by fitting the lower end portion of the flat joiner 50 into the block member 69 arranged on the floor portion 62. Stand while positioning at the position.

When attaching the flat joiner 50 to the wall panel 30 (30B), the bent portion 33 of the wall panel 30 (30B) is inserted into the hollow portion 56 from the opening 54 of the flat joiner 50 into the bent portion 52. It is in a locked state. At this time, the bent curved surface 33a (second locking surface) of the bent portion 33 and the bent curved surface 52a (fourth support surface) of the bent portion 52 are in contact with each other.

Next, as shown in FIG. 10, the block member 68 (68A) is attached to the upper end portion of the flat joiner 50. The block member 68 (68A) is provided with a protruding insertion portion (not shown) that is inserted into the bent portion 33 (specifically, the hollow portion 33d) of the wall panel 30 (30B). By inserting this insertion portion into the bent portion 33 (hollow portion 33d), it is possible to prevent the block member 68 (68A) from coming off, and the folded curved surface 33a (second locking) of the wall panel 30 (30B) can be prevented. The surface) can be reliably fixed in a state of being in contact with the folded curved surface 52a (fourth support surface) of the bent portion 52 of the flat joiner 50. However, the configuration of the block member 68 (68A) is not limited to the above example.

Next, one wall panel 30 (30C) is erected on the outer edge of the floor portion 62. At that time, the bent portion 34 of the wall panel 30 (30C) is inserted into the hollow portion 56 from the opening 54 of the flat joiner 50 and locked to the bent portion 51. At this time, the bent curved surface 34a (first locking surface) of the bent portion 34 and the bent curved surface 51a (third support surface) of the bent portion 51 are in contact with each other. As in the case of the wall panels 30A and 30B, the folded curved surface 31b (first folded curved surface) of the bent portion 31 of the wall panel 30C and the bottom of the wall provided on the contact surface 62a of the outer edge portion of the floor portion 62. The packing 64 is in close contact with the packing 64 to prevent water from entering.

Next, the block member 68 (68B) is attached to the upper end of the flat joiner 50. The block member 68 (68B) is provided with a protruding insertion portion (not shown) that is inserted into the bent portion 34 (specifically, the hollow portion 34d) of the wall panel 30 (30C). By inserting this insertion portion into the bent portion 34 (hollow portion 34d), it is possible to prevent the block member 68 (68B) from coming off, and the folded curved surface 34a (first locking) of the wall panel 30 (30C) can be prevented from coming off. The surface) can be reliably fixed in a state of being in contact with the folded curved surface 51a (third support surface) of the bent portion 51 of the flat joiner 50. However, the configuration of the block member 68 (68B) is not limited to the above example.

Next, according to the design specifications of the unit bath (here, the horizontal dimension of the wall portion), the corner joiner 40 is attached to the wall panel 30C to terminate the wall surface, or the flat joiner 50 is attached to extend the wall surface. Either set up or carry out either process. In addition, when either the corner joiner 40 or the flat joiner 50 is attached, the attachment method is the same as in each of the above-mentioned cases, and therefore the repeated description will be omitted.

In this way, by sequentially assembling the wall panel 30, the corner joiner 40, and the flat joiner 50, the wall portion can be formed so as to go around the outer peripheral edge of the floor portion 62. At that time, the wall panel 30, the corner joiner 40, and the flat joiner 50 are attracted to each other and integrated, so that the wall surface of the unit bath can be easily formed without providing a special member. At this time, the folded curved surfaces 34a (first locking surface) and 33a (second locking surface) of the wall panel 30 and the folded curved surfaces 41a (first support surface) and 42a (second support surface) of the corresponding corner joiner 40. The support surface) and the folded curved surfaces 51a (third support surface) and 52a (fourth support surface) of the flat joiner 50 are in an elastically locked state.

By the way, between the wall panels 30 which are locked to the corner joiner 40 and arranged side by side, more specifically, the bending of one of the wall panels 30 (30A) inserted into the hollow portion 46 from the opening 44. There is a gap between the portion 33 and the bent portion 34 of the other wall panel 30 (30B). Therefore, a step of fitting the dry joint material 60 shown in FIG. 7 into this gap and closing the gap to prevent the ingress of water is carried out. As an example, the dry joint material 60 is formed in a solid state that can be elastically deformed by using a resin material. That is, in the dry joint material 60, the back surface (outdoor surface) of the base 60a is elastically brought into contact with the surface of the wall panel 30, and the projecting portion 60b is brought into the bent portion 33 of the wall panel 30 (here, the fourth folding portion). By elastically contacting the curved surface 33c) and the bent portion 34 (here, the third folded curved surface 34c), the water blocking action of the gap (the action of preventing water from entering the wall) is generated. However, the configuration of the dry joint material 60 is not limited to the above example.

Similarly, the folding of one of the wall panels 30 (30B) inserted into the hollow portion 56 from the opening 54 between the wall panels 30 locked and juxtaposed to the flat joiner 50. There is a gap between the curved portion 33 and the bent portion 34 of the other wall panel 30 (30C). Therefore, a step of fitting the dry joint material 60 shown in FIG. 7 into this gap and closing the gap to prevent the ingress of water is carried out. As described above, the dry joint material 60 is formed in a solid state that can be elastically deformed by using a resin material. That is, in the dry joint material 60, the back surface (outdoor surface) of the base 60a is elastically brought into contact with the surface of the wall panel 30, and the projecting portion 60b is brought into the bent portion 33 of the wall panel 30 (here, the fourth folding portion). By elastically contacting the curved surface 33c) and the bent portion 34 (here, the third folded curved surface 34c), the water blocking action of the gap (the action of preventing water from entering the wall) is generated. However, the configuration of the dry joint material 60 is not limited to the above example. Further, the dry joint material may have different configurations for the corner portion and the side portion (intermediate portion) (not shown).

Through these steps, the wall portion of the unit bath is configured.

As described above, if a curable liquid resin material is used as the joint material, the shape and dimensions of the gaps vary due to the low accuracy of forming the external dimensions of the wall panel 30. However, it is possible to fill the gap and prevent water from entering the wall (the back side opposite to the indoor side). However, the joint material made of a liquid resin material takes time and effort to construct, which causes a problem that the construction period and cost increase. Therefore, in the present embodiment, the construction work is facilitated by using the solid dry joint material 60 formed by using the resin material as shown in FIG. 7 (see FIGS. 8 to 10). It is possible to shorten the construction period and reduce costs.

However, since the solid dry joint material is used, the lower the accuracy of forming the external dimensions of the wall panel 30, the more the water blocking action of the gap into which the joint material is fitted cannot be obtained, and the water penetrates into the wall. There will be a problem. Specifically, if the formation accuracy of the parallelism of the long side portions (here, the parallelism between the third folded curved surface 34c and the fourth folded curved surface 33c) in each wall panel 30 is low, the long side portions are arranged adjacent to each other. When a plurality of wall panels 30 are arranged side by side to form a wall portion, the folded curved surface of one wall panel 30 (here, the fourth folded curved surface 33c) and the folded curved surface of the other wall panel 30 (here, here). The gap between it and the third folded curved surface 34c) is distorted like a trapezoid, and when the solid dry joint material 60 is fitted, it is with the folded curved surface (fourth folded curved surface 33c, third folded curved surface 34c). A gap is created between them, causing the ingress of water.

Here, the wall panel 30 is manufactured by forming a rectangular raw material 10 (the above-mentioned decorative steel plate) into a predetermined shape by press working. Therefore, if the raw material 10 is a rectangular plate material in which the error (angle tolerance) at the time of formation (during cutting) at the squareness of the four corners is set as small as possible and the pressing process is performed according to the external shape, the wall panel is formed. It is also possible to improve the forming accuracy of the external dimensions of 30. However, in order to prepare such a raw material 10, an expensive device with high processing accuracy is required, and work such as measuring the processed material to drive an error is also required. As a result, the raw material 10 is required. There arises a problem that the cost of the plate material becomes high.

Therefore, the inventor of the present application can use an inexpensive rectangular plate material having a relatively large angle tolerance at the time of formation (during cutting) at the squareness of the four corners as the raw material 10, and is formed by press working. We have come up with the following manufacturing method that can make the formation accuracy of the external dimensions (particularly, the parallelism of the long side) extremely high.

(Production method)
Subsequently, a method for manufacturing the wall panel 30 according to the present embodiment will be described. This manufacturing method includes the following main steps of manufacturing a wall panel 30 having a predetermined shape by cutting and bending the raw material 10 while transporting the raw material 10 in a line. Further, a manufacturing apparatus 100 that performs processing on one line is used for manufacturing. FIG. 11 shows an explanatory view (schematic configuration diagram in a plan view) of the manufacturing apparatus 100. The arrow X in the figure indicates the line transport direction.

As the raw material 10, a rectangular plate material (the above-mentioned decorative steel plate) is used. Here, regarding the shape of the "rectangle", ideally all the angles of the four corners are 90 ° (± 0 °), but in reality, there is an error in the angles of the four corners at the time of formation (during cutting) (in the present application, "" Includes (referred to as "angle tolerance") (ie, includes not only geometrically defined rectangles but also substantially rectangles). Generally, the smaller the angle tolerance, the higher the material price, and the larger the angle tolerance, the cheaper the material price.

According to the manufacturing method according to the present embodiment, by providing the following characteristic configurations (steps), the angle tolerance at the time of formation (during cutting) at the squareness of the four corners is set to be relatively large and inexpensive. A rectangular plate can be used as the raw material 10. If the example of the raw material 10 is shown with emphasis in an easy-to-understand manner, the diamond-shaped raw material 10 (10A) shown in FIG. 12 (a), the trapezoidal raw material 10 (10B) shown in FIG. 12 (b), and FIG. 12 (c). ) Can be used even if it has a shape such as the raw material 10 (10C) having a camber (the shape is emphasized for explanation, not a reduced view of the actual shape). As in these examples, as the raw material 10, a rectangular plate material to which a relatively large angle tolerance is allowed for the squareness of the four corners, specifically, the angles of the four corners (angle θ1 of the first corner portion 11 and the second corner). A rectangular plate having an angle tolerance within ± 0.5 ° with respect to a right angle (90 °) of the angle θ2 of the portion 12, the angle θ3 of the third corner portion 13, and the angle θ4 of the fourth corner portion 14). It is possible to manufacture the wall panel 30 which can be used and has high external accuracy (particularly, parallelism of the long side portion). Hereinafter, it will be described in detail.

First, a rectangular plate material (the one to which the above-mentioned angle tolerance is allowed) to be the raw material 10 is prepared, and a step of carrying it onto the line is carried out (A1 step). As an example, from the stocker 102 in which a plurality of the plate materials are laminated and stored, one sheet at a predetermined tact is placed on the line (here, on the start end 104) using a transfer device (not shown) such as a feeder. The method of placing can be adopted. For the subsequent line transfer of the raw material 10, a transfer device (not shown) such as a belt conveyor is mainly used. As an example, the rotation moving portion 110 (described later) is conveyed with the first short side 15 side as the head, and the rotation moving portion 110 is conveyed with the second long side 18 side as the head, but the configuration is limited to this. is not it.

Next, after the A1 step, the A2 step is carried out in the cutting processing section 106. As an example, the cutting section 106 is configured to include a cutting die (not shown). As the A2 step, a step of forming a notch according to the specifications at a predetermined position of the raw material 10 by press working (cutting) is carried out.

Next, after the A2 step, the A3 step is carried out in the short edge processing portion 108. As an example, the short side processing portion 108 is configured to include a press die 130 for bending and a positioning device (not shown) for positioning the raw material 10. As the A3 step, a step of forming a bent portion according to the specifications on the short side portion of the raw material 10 by press working (bending process) is carried out. In the present embodiment, the end portion of the raw material 10 near the first short side 15 is diffracted twice to form a bent portion 31 having a folded curved surface 31a and a folded curved surface 31b (first folded curved surface). Further, the end portion of the raw material 10 near the second short side 16 is diffracted twice to form a bent portion 32 having a folded curved surface 32a and a folded curved surface 32b (second folded curved surface).

Next, after the A3 step, the A4 step is carried out in the rotary moving unit 110. As an example, the rotational movement unit 110 is configured to include a rotational movement device (not shown) that rotationally moves the raw material 10 to change the direction of line transport. As the A4 step, a step of rotating the raw material 10 in the in-plane direction by 90 ° is carried out.

Next, after the A4 step, the B1 step is carried out in the long side processing portion 112 (112A). As an example, the long side processing portion 112 (112A) includes a press die 140 for bending, an abutting portion 142 (142A, 142B) for setting a reference position when positioning the raw material 10, and a raw material from the reference position. It is configured to include a positioning device 144 (144A, 144B) for performing positioning by pushing 10 and precisely moving it.

As a B1 step, a reference line 21 (for example, predetermined positions 21A and 21B on the first long side 17) provided at the end of the raw material 10 on the first long side 17 side is abutted against the corresponding abutting portion 142 (specifically). The reference line 21A is abutted against the abutting portion 142A and the reference line 21B is abutted against the abutting portion 142B), and the reference position when positioning the press working position in the raw material 10 is set. As a modification of the reference line, a notch may be formed at the end on the first long side in the A2 step, and a predetermined position (straight line) or the like in the notch may be used (not). Illustrated). Subsequently, the raw material 10 is bent by press working at a predetermined position (specifically, a position parallel to the reference line 21 and separated by a predetermined dimension) in the raw material 10 to be bent, and the third folded curved surface 34c. Perform the steps to form. This third folded curved surface 34c is used as a reference line as a reference position when bending along a bending line along a long side (here, the first long side 17) in the next B2 step. In the present embodiment, the end portion of the raw material 10 near the second long side 18 is bent three times to form a folded curved surface 34a (first locking surface), a folded curved surface 34b, and a folded curved surface 34c (third folded curved surface). ) Is formed, three positions are set as the above-mentioned predetermined positions. Therefore, the operation of moving the raw material 10 in the same direction as the line transport direction by the positioning device 144, positioning the above-mentioned predetermined position so as to coincide with the press processing position in the press die 140, and performing press processing (bending processing). Is performed three times (that is, three rounds).

As shown in FIG. 13, the long side processing portion 112 (112A) of the manufacturing apparatus 100 according to the present embodiment has a mechanism in which the positioning device 144 moves the abutting portion 142, and the abutting portion 142 has the abutting portion 142. It is configured to abut on the raw material 10 (that is, in a state of being abutted against it) and push it. Further, the abutting portion 142 advances and retreats in the vertical direction with respect to the line conveying direction, and has an abutting surface on the terminal side in the line conveying direction. However, the configuration is not limited to this.

Next, after the B1 step, the B2 step is carried out in the long side processing portion 112 (112B). As an example, the long side processing portion 112 (112B) includes a press die 146 for bending, an abutting portion 148 (148A to 148F) for setting a reference position when positioning the raw material 10, and a raw material from the reference position. It is configured to include a positioning device 150 for performing positioning by pushing the 10 and precisely moving it.

As the B2 step, the abutting portion 148 (148A to 148F) that abuts the reference line (here, the third folded curved surface 34c) is set to the short side (here, the first folded curved surface 31b and the second folded curved surface 32b). ) Is moved according to the length to be positioned at the set position (here, the position where the raw material 10 is bent to form the fourth folded curved surface 33c). However, in the present embodiment, as in the case of forming the third folded curved surface 34c described above, the end portion of the raw material 10 near the first long side 17 is bent three times to form the folded curved surface 33a (second locking surface). It is a stepwise process of forming the bent portion 33 having the folded curved surface 33b and the folded curved surface 33c (fourth folded curved surface). Therefore, the positioning device 150 sequentially moves and positions the raw material 10 in the direction opposite to the line transport direction, and finally positions the raw material 10 at the above-mentioned set position.

As shown in FIG. 14, the long side processing portion 112 (112B) of the manufacturing apparatus 100 according to the present embodiment has, as the abutting portion 148, a regular abutting portion 148A and a selective abutting portion 148 (148B to 148F). I have. Here, the regular abutting portion 148A is provided at one place and is a abutting portion that is regularly used regardless of the lengths of the long sides 17 and 18 of the raw material 10. On the other hand, the selective abutting portions 148 (148B to 148F) are provided at a plurality of locations (there are five locations in the present embodiment, but the present invention is not limited to these), and the long sides 17 and 18 of the raw material 10 are provided. It is an abutting part that is selected and used at one place according to the length. For example, when the lengths of the long sides 17 and 18 are set to about 1000 mm, 148B is selected and used from the selective abutting portion together with the regular abutting portion 148A. Alternatively, when the lengths of the long sides 17 and 18 are set to about 2300 mm, 148F is selected and used from the selective abutting portion together with the regular abutting portion 148A. In this way, since the abutting portion (that is, one selected from the selective abutting portions 148B to 148F) can be arranged at the optimum position according to the lengths of the long sides 17 and 18, press working is performed. It is possible to prevent the position shift of the raw material 10 when performing (bending) and to process the raw material into a highly accurate shape.

The long side processing portion 112 (112B) of the manufacturing apparatus 100 has a mechanism by which the positioning device 150 moves the abutting portion 148 (148A to 148F), and the abutting portion 148 (148A to 148F) has a mechanism. It is configured to abut on the raw material 10 (that is, in a state of being abutted against it) and push it. Further, the abutting portion 148 (148A to 148F) advances and retreats in the vertical direction with respect to the line conveying direction, and has an abutting surface on the starting end side in the line conveying direction. However, the configuration is not limited to this.

Here, the positioning device 150 according to the present embodiment includes a base portion 152 that independently and movably supports the abutting portions 148 (148A to 148F) and is arranged so as to be movable by itself. According to this, by moving the base portion 152 in the positioning device 150, the regular abutting portion 148 (148A) and the selective abutting portion are selected regardless of which of 148B to 148F is selected as the selective abutting portion. It is possible to move both 148 (148B to 148F) at once.

As described above, by providing the regularly used abutting portion 148 (148A) and the selective abutting portion 148 (148B to 148F) provided at a plurality of locations and used selectively, a wide variety of products having different long side lengths are provided. The wall panel 30 can be manufactured by one long side processing portion 112, that is, by one line. Therefore, the manufacturing apparatus 100 can be simplified and reduced in cost.

However, there are two problems that arise because of such a configuration. As the first problem, since the selective abutting portion 148 (148B to 148F) is appropriately selected and switched according to the shape of the raw material 10 (here, the long side length), the selective abutting portion 148 (in this case, the long side length) is selected and switched. 148B to 148F) and the regular abutting portion 148 (148A) cause misalignment with each other. That is, the abutting surface 148y of the selective abutting portion 148 (148B to 148F) and the abutting surface 148x of the regular abutting portion 148 (148A) should ideally be arranged in the same plane, but in the line transport direction. It causes a deviation.

When the bending process is performed in the state where the deviation occurs, as shown in FIG. 15 (the figure emphasizes the shape for explanation), the reference line (here, the third folding curved surface) which is the reference line for bending is performed. The fourth folded curved surface 33c, which should be bent and formed by press working so as to be parallel to 34c), is formed into a non-parallel shape. That is, as shown in FIG. 16, the rectangular raw material 10 having the shape shown in FIG. 16A is pressed (bent), and ideally, the long side portion has the shape shown in FIG. 16B. Where the wall panel 30 with high parallelism (specifically, the parallelism between the third folded curved surface 34c and the fourth folded curved surface 33c) should be formed, the parallelism of the long side portion as shown in the shape of FIG. 16 (c). (Specifically, the wall panel 30 having a low parallelism between the third folded curved surface 34c and the fourth folded curved surface 33c) is formed (FIG. 16 (c) is a diagram in which the shape is emphasized for explanation). .. When the wall panels 30 having low parallelism on the long sides are arranged side by side to form the wall portion of the unit bath, the folded curved surface of one of the adjacent wall panels 30 (for example, the fourth folded curved surface). 33c) and the folded curved surface of the other wall panel 30 (for example, the third folded curved surface 34c) cannot be held in parallel, and even if the dry joint material 60 is inserted into the gap between the two, a gap is formed and water is formed. Infiltration will occur.

Further, as a second problem, since many kinds of raw materials (particularly, raw materials 10 having different long side lengths) are press-processed by one long-side processing portion 112, the frequency of use in the longitudinal direction (in particular, in the press die 146) ( That is, there is a difference in the contact frequency with the raw material 10), which causes the amount of wear to be non-uniform. Specifically, when the raw material 10 is pressed (bent) by the press die 146, the accuracy is lowered as shown in FIG. 17 (the shape is emphasized for explanation). That is, the third folded curved surface 34c, which is the reference line, causes a deviation in the bending angle depending on the position in the longitudinal direction. That is, where the bending angle of the third folded curved surface 34c with respect to the plate surface should be processed to 90 ° as in the shape of FIG. 17 (a), the bending angle is 90 as shown in the shape of FIG. 17 (b). It will be in a state where it will be processed deviating from °. The error in the bending angle of the third folded curved surface 34c as shown in FIG. 17B may also occur due to a change in the thickness of the sheet 39 attached to the plate material of the raw material 10 (however, in the longitudinal direction). It is not a factor that causes variation in the bending angle in.)

As a result of such an error in the bending angle of the third folded curved surface 34c, the parallelism of the long side portion, specifically, as in the case of the first task, as shown in FIG. 16 (c). Will form a wall panel 30 having a low degree of parallelism between the third folded curved surface 34c and the fourth folded curved surface 33c. That is, the wall panel 30 does not have a sufficient water blocking effect due to the dry joint material 60.

In this embodiment, the following characteristic configurations (manufacturing process and apparatus configuration) are provided to solve these problems.

First, regarding the manufacturing process, the C1 step is carried out in the long side processing portion 112 (112B) after the B2 step. As a C1 step, a reference line (the above-mentioned third folded curved surface 34c) is applied to the raw material 10 up to the N (N = natural number) sheet, and the regular abutting portion 148 (148A) and the selective abutting portion 148 (148B to). A step of bending the raw material 10 by press working is carried out at a position parallel to the reference line (third folding curved surface 34c) and separated by a predetermined dimension by abutting against two points of 148F).

Next, after the C1 step, the C2 step is carried out in the long edge processing portion 112 (112B). As the C2 step, the shape of a predetermined position in the raw material 10 bent in the C1 step (as an example, the third folded curved surface 34c and the fourth folded curved surface 33c at the respective positions on the first folded curved surface 31b side and the second folded curved surface 32b side). If the amount of deviation obtained by comparing with the design value exceeds the allowable range (that is, the parallelism is lower than the allowable range), the base unit By individually moving one or both of the regular abutting portion 148 (148A) and the selective abutting portion 148 (148B to 148F) with respect to 152 in the front-rear direction in the line transport direction, the regular abutting portion 148 (148A) ) And the step of finely adjusting the set position of the selective abutting portion 148 (148B to 148F). That is, the above steps C1 and C2 are repeated until the amount of deviation of the measured values at the predetermined points is within the permissible range.

Next, after the C2 step, the D1 step is carried out in the long side processing portion 112 (112B). As the D1 step, the reference line (third folded curved surface 34c) is struck at two points, the regular abutting portion 148 (148A) and the selective abutting portion 148 (148B to 148F), with respect to the raw materials 10 of the N + 1th and subsequent sheets. A step of bending the raw material 10 by press working is performed at a position parallel to the reference line (third folded curved surface 34c) and separated by a predetermined dimension. That is, the wall panel 30 from the N + 1th and subsequent raw materials 10 is shipped as a product conforming to the specifications (the parallelism of the long side portion is highly accurate).

Here, regarding the configuration of the manufacturing apparatus 100, the abutting portion 148 arranged in the base portion 152 is moved so that the position of the abutting surface can be changed along the line transport direction with respect to the base portion 152. It has a moving mechanism. As an example, it is configured to include a moving mechanism 154 for moving the regular abutting portion 148 (148A). Alternatively, as a modification, a configuration may be provided including a moving mechanism (not shown, but the same configuration as the moving mechanism 154 may be adopted) for moving the selective abutting portions 148 (148B to 148F), respectively. As yet another modification, a moving mechanism 154 for moving the regular abutting portion 148 (148A) and a moving mechanism for moving the selective abutting portion 148 (148B to 148F) (not shown, but similar to the moving mechanism 154). It may be a configuration including both (a configuration may be adopted).

As an example, the movement mechanism 154 is configured by using an electric actuator capable of setting the movement with a dimensional accuracy of 0.05 mm or less. As an example of this electric actuator, a servomotor rotates a ball screw to move a slider that is screwed into the ball screw and movably supported by a linear guide.

That is, in the above C2 step, one or both of the regular abutting portion 148 (148A) and the selective abutting portion 148 (148B to 148F) are individually moved with a dimensional accuracy of 0.05 mm or less by using an electric actuator. It is provided with a step of finely adjusting the set positions of the regular abutting portion 148 (148A) and the selective abutting portion 148 (148B to 148F). According to this, it is possible to form the parallelism of the long side portion (specifically, the parallelism between the third folded curved surface 34c and the fourth folded curved surface 33c) in the manufactured wall panel 30 with extremely high accuracy. Will be.

By providing the above configuration (manufacturing process and equipment configuration), the raw material 10 is pressed against the plate surface along the long side (here, the first long side 17) with respect to the above-mentioned B1 step. The folded curved surface (here, the third folded curved surface 34c) is formed by bending it to 90 ° with a low accuracy of about 1 ° or less, and the folded curved surface 34c is used as a reference line in the next step (B2 step). It becomes possible.

That is, in order to realize high processing accuracy (shape accuracy) of the wall panel 30, when the raw material 10 is bent along a long side (first long side 17) in the B1 step. In addition, it is possible to allow the use of the press die 140 in which the error of the angle tolerance is large to some extent (the accuracy is low to some extent). In other words, even a folded curved surface (third folded curved surface 34c) having a certain degree of squareness of bending can be used as a reference line. Further, even a folded curved surface (third folded curved surface 34c) having a certain degree of low accuracy as caused by non-uniform wear of the press die 140 can be used as a reference line. As a result, the manufacturing apparatus 100 can be simplified and reduced in cost, and the equipment maintenance can be simplified.

As described above, according to the method for manufacturing the wall panel 30 according to the present embodiment, the following remarkable effects can be obtained by providing the above-mentioned main steps in close cooperation. Specifically, as the raw material 10, a plate material having low processing accuracy (that is, the shape accuracy of the outer shape), for example, a rectangular plate material in which the squareness of the four corners includes an angle tolerance within 0.5 ° generated during cutting processing is used. Therefore, it is possible to reduce the material cost. Further, even if such a low-precision plate material is used, the rectangular wall panel 30 having an extremely small parallelism tolerance (processing error) between the first long side folding curved surface 33c and the second long side folding curved surface 34c. Can be manufactured.

Therefore, a plurality of wall panels 30 are arranged side by side with a gap of a predetermined dimension in the wall portion of the unit bath in an arrangement in which the long side portions are adjacent to each other, and the solid dry joint material 60 is simply inserted into the gap. It is possible to obtain a water blocking action (water infiltration prevention action). That is, since it is not necessary to fill the gap with a liquid joint material to stop water, the wall installation work can be performed easily and in a short time, and the on-site construction cost can be reduced. can.

After the D1 step, necessary steps are appropriately performed. As an example, in the corner processing portion 114 (114A, 114B), the E1 and E2 steps of forming the corner portion of the raw material 10 into a predetermined shape by press working are carried out. Next, an F1 step is carried out in which the wall panel 30 in a state where the processing of the raw material 10 in the manufacturing apparatus 100 is completed and formed into a predetermined shape is placed on the terminal portion 116. Next, using a transport device (not shown) such as a feeder, the wall panels 30 are transported one by one from the line (here, on the terminal 116) into the stocker 118, and a G1 step of stacking and storing them is carried out. .. However, the present invention is not limited to these steps, and other additional processing may be performed following the E2 step. In that case, a necessary mechanism may be provided in the manufacturing apparatus 100 to perform additional processing of the wall panel 30, or after the wall panel 30 is transported (transferred) to another manufacturing apparatus (not shown), the wall panel 30 may be additionally processed. Additional processing may be performed.

As described above, according to the method for manufacturing a wall panel according to the present invention, an inexpensive rectangular plate material having a relatively large angle tolerance at the squareness of the four corners can be used as a raw material, and the external dimensions are large. It is possible to manufacture a wall panel having extremely high forming accuracy (particularly, parallelism of long sides). As a result, in a configuration in which a solid dry joint material is used as the joint material instead of a liquid resin, it is possible to dramatically improve the water blocking performance of the gap into which the joint material is fitted. Therefore, when constructing the wall portion of the unit bath, the construction work can be facilitated, the construction period can be shortened, and the cost can be reduced.

The present invention is not limited to the embodiments described above, and various modifications can be made without departing from the present invention. This wall panel is preferably used when constructing the wall portion of the unit bath, but it goes without saying that it can also be used when constructing a wall portion other than the unit bath.

10, 10A, 10B, 10C Plate material (raw material)
15 1st short side 16 2nd short side 17 1st long side 18 2nd long side 21, 21A, 21B Reference line 30, 30A, 30B, 30C Wall panel 31, 32, 33, 34 Folded surface 31b Folded curved surface ( 1st folding curved surface)
32b folded curved surface (second folded curved surface)
33c folded curved surface (4th folded curved surface)
34c folded curved surface (third folded curved surface)
39 Sheet 40 Corner joiner 50 Flat jointer 60 Dry joint material 62 Floor part 100 Manufacturing equipment 140, 146 Press dies 142, 142A, 142B Butting part 144, 144A, 144B Positioning device 148, Butting part 148A Butting part (regular use) Butt part)
148B-148F abutment part (selective abutment part)
150 Positioning device 152 Base 154 Moving mechanism

Claims (3)

It is formed by a processing step of processing a plate material made of a metal material to which a sheet made of a resin material is attached to one surface into a predetermined shape while transporting the plate material in a line, and is arranged with a gap of a predetermined size in the wall portion of the unit bath. It is a method for manufacturing a wall panel that is used in a state where a solid dry joint material is fitted into the gap to cause a water blocking action.
The processing step is
A1 step to prepare the rectangular plate material,
After the A1 step,
A B1 step of forming a reference line at a predetermined position of the plate material, which is a reference position when the plate material is bent along a bending line along a long side.
One place is provided and is used regularly, which is the abutting part for abutting the reference line, and one place is selected and used according to the length of the long side of the plate material provided at a plurality of places. By moving the base portion that independently and movably supports the selective abutting portion to be set according to the length of the set short side, both the regular abutting portion and the selective abutting portion can be moved. B2 step to move all at once and position at the set position,
After the B1 step and the B2 step,
The reference line is abutted against the plate material up to the N (N = natural number) sheet at two points, the regular abutting portion and the selective abutting portion, and is parallel to the reference line and predetermined. A C1 step that bends the plate material by press working at a position separated by dimensions,
When the amount of deviation obtained by comparing with the design value after measuring the shape of the predetermined portion of the plate material bent in the C1 step exceeds the permissible range, the said By individually moving one or both of the regular abutting portion and the selective abutting portion in the front-rear direction in the line transport direction, the set positions of the regular abutting portion and the selective abutting portion are finely adjusted. Steps and
After the C1 step and the C2 step,
The reference line is abutted against the N + 1th and subsequent plates at two points, the regular abutting portion and the selective abutting portion, at positions parallel to the reference line and separated by a predetermined dimension. , D1 step to bend the plate material by press processing,
A method of manufacturing a wall panel, which comprises. In the B1 step, the plate material is bent at a bending line along the long side to 90 ° with respect to the plate surface within an angle tolerance of 1 ° by press working to form a folded curved surface, and the folded curved surface is formed. The method for manufacturing a wall panel according to claim 1, further comprising a step of setting a reference line. In the C2 step, the regular abutting portion and the selective abutting portion are individually moved by using an electric actuator to move one or both of the regular abutting portion and the selective abutting portion individually with a dimensional accuracy of 0.05 mm or less. The method for manufacturing a wall panel according to claim 1 or 2, wherein the step of finely adjusting the setting position of the portion is provided.

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